Configurable process list

[huard]

Description

At the moment the PyWPS application is created using the wsgi.create_app function, which imports the list of PyWPS.Process instances defined in processes/__init__.py. I think it would be useful to have a way to configure active processes, for example using a yml config file, which could list the process identifiers to deploy within the Service.

Now to map the identifiers to the process classes, we could

• inspect objects inside the processes/ directory, find Process subclasses and extract their identifier
• modify PyWPS to register Process subclasses
• create a register_process decorator in the cookie-cutter

[huard]

@tlvu As discussed.